Knock Down Rebuilds & Second Storey Additions

Knock Down Rebuilds & Second Storey Additions in Pitt Town, Oakville, Springwood, Hazelbrook & Bilpin

Build Bigger. Build Better. With JMAR Building Co.

Construction workers on ladders building a structure with wooden beams, wearing safety gear and headphones.

At JMAR Building Co., we specialise in transforming outdated or undersized homes into spacious, modern masterpieces. Whether you're ready to knock down and start fresh or want to build up with a stunning second storey addition, we make it happen, smoothly, professionally, and with zero stress.

Our Services

Knock Down Rebuilds

Love your location but not your layout? We'll remove your existing structure and build your dream home from the ground up — designed to suit your lifestyle, block, and future.

  • Custom design tailored to your vision

  • Full project management from demolition to handover

  • Save on stamp duty and relocation costs

  • Energy-efficient and modern home designs

Second Storey Additions

Need more space but don’t want to lose your yard? A second-storey addition is the perfect solution.

  • Seamless integration with your existing home

  • Additional bedrooms, bathrooms, or a parent's retreat

  • Cost-effective alternative to moving

  • Council approval assistance included

Construction worker using a miter saw on wooden planks at a building site.
A construction worker using a nail gun to secure wooden beams at an outdoor site, wearing protective gear and a utility vest.
A construction worker in a blue shirt with "JMAR Building Co." logo, carrying tools, standing on a deck.

MEET JAYDEN | DIRECTOR

Building Your Dream, Together.

Jayden - Director of Jmar Building Co

Prior to founding JMAR, Jayden discovered his passion for carpentry and building at a young age. After high school, he completed an apprenticeship with a local carpenter and advanced his skills with a Certificate IV in Building and Construction.

He then started his own business, contracting carpentry work for other builders before joining a luxury home team, where he managed high-end projects.

Branching out to run his own company, Jayden obtained an NSW residential building license. Seeing a gap in the custom home market, JMAR focuses on new homes, renovations, and additions, delivering innovative designs and personalised service.

Let’s Bring Your New Home to Life

Book a free consultation today. Whether it’s a fresh start or an elegant addition, we’re ready to help you create more space, style, and comfort. Right where you are.

Fill out the form or call us on 0414 199 754

OUR OTHER SERVICES

Transform Your Home With JMAR Building Co

White wooden house with a large veranda and railing, surrounded by trees, featuring a brick staircase leading to the entrance.

Custom New Homes

Every home we build is thoughtfully designed around the people who live in it. From layout to final finish, we create spaces that feel tailored, functional, and truly yours.

Modern kitchen with blue island, marble countertops, white cabinets, pendant lights, and a decorative backsplash.

Architectural Renovations

From structural transformations to thoughtful additions, we enhance your home with seamless renovations that blend style, comfort, and practicality.

Modern open-plan living area with a kitchen island, wood-burning stove, large window, light wood flooring, and white walls.

Duplex & Dual Occupancy

For families or investors looking to make the most of their space, we build smart, efficient duplex and dual occupancy homes that feel light, spacious, and functional.

Modern bathroom with marble walls, a large window, a toilet, a wall-mounted sink, orange towels, and a matching rug.

Kitchens & Bathrooms

We create kitchens and bathrooms that work beautifully for the way you live — blending design, quality materials, and practical layouts that last.

Outdoor patio of a modern restaurant with people sitting at tables and others waiting in line; wooden pergola and greenery overhead.

Commercial Fit-outs

Our commercial fit-outs are designed to optimise your business space, ensuring efficiency, durability, and a seamless blend of form and function.

Red brick house with a covered porch and stairs leading down to a lawn, featuring a ceiling fan and metal railing.

Outdoor Living & Carpentry

From decks and pergolas to custom carpentry, we create beautifully crafted outdoor spaces that complement your home and lifestyle.

OUR TESTIMONIALS

What Our Clients Say

★★★★★

“Jayden was so impressive with his reliability, his ensuring I fully understood the work he would be doing and his reliability. He arrived to quote when he said he would, sent his quote when he said he would and carried out the work when he said he would. Totally trustworthy..

Rosina S ~ Gymea Bay

★★★★★

"From a rough idea, Jayden was able to produce an excellent result and exactly as I had envisioned. Jayden and his team worked diligently to complete my verandah addition. The end result exceeded expectations. Jayden is meticulous in his workmanship & very easy to work with…”

Greg R ~ Home Addition

★★★★★

“Jayden came and did some work for me. His attention to detail and explanation of process and products was impeccable. Jayden's communication was fantastic and he is extremely reliable. Thank you Jayden for turning our house into our dream home.” 

Bec C ~ Home Renovation

WHY WORK WITH US?

Our Commitment to Excellence

We don’t just build houses – We create the spaces where your life’s most cherished moments unfold.

Graphic of a hand holding a badge with a check mark

Quality Craftsmanship

Our team of skilled carpenters deliver high-quality homes, renovations, and additions built to last, with attention to every detail.

Icon of a clipboard with a gear, checkboxes, and a shield with a check mark.

Seamless Process

From consultation to handover, we ensure clear communication, efficient timelines, and a stress-free building experience.

Icon of two people shaking hands with a star above them.

Tailored Solutions

Every project is unique, and we work closely with you to create a home that reflects your vision, lifestyle, and meet your specific needs.

Elegant foyer with a decorative round table, ornate wood floor, abstract paintings, gold-framed mirror, chandelier, and floral arrangements.

Ready To Get Started On Your Dream Home?

Have an idea or project in mind? Let’s chat about your vision, and take the first step towards making it a reality.

Modern kitchen with marble island, gold bar stools, pendant lights, white cabinetry, and decorative backsplash.